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Pure functions

A pure function is a function which:

Given the same input, always returns the same output and the Produces have no side effects.

Preoperties

  • No random values
  • No current date/time
  • No global state
  • No mutation of parameters

Benefits

  • Self-documenting
  • Easily testable

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Note

Higher order functions

A higher order function is a function that takes one or more functions as arguments, or returns a function as its result. These functions are powerful because …

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Essay

Redirect your webpage using JavaScript

JavaScript to redirect from one website to another. The window.location object can be used to get the current page address and redirect to a new page.

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Note

Browser default actions

The preventDefault() method cancels the event if it is cancelable, meaning that the default action that belongs to the event will not occur.

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